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This Mahle plasma moly top compression ring set is specified at 4.535 inch diameter with .0625 inch thickness and .190 inch RW, sold as a precision ring set for engine rebuilds or repairs. The plasma moly top ring is intended to serve as the upper compression ring in compatible pistons, providing the source-stated ring profile and sizing for builders matching these exact dimensions.
Mahle Rings Plasma Moly Steel Top Compression Ring 4.535in x .0625in .190in RW Moly Ring Set
